UefiPayloadPkg: Not use BaseCpuTimerLib by default.

For recent X86 CPU, 0x15 CPUID instruction will return Time Stamp Counter. This is recommended way to get the time, and also how BaseCpuTimerLib works However, some CPU doesn't support this feature, so disable it by default. Cc: Guo Dong <[email protected]> Cc: Ray Ni <[email protected]> Cc: Maurice Ma <[email protected]> Cc: Benjamin You <[email protected]> Signed-off-by: Zhiguang Liu <[email protected]> Reviewed-by: Guo Dong <[email protected]> Reviewed-by: Maurice Ma <[email protected]>
cloud-hypervisor · Jan 17, 2022 · 5801910 · 5801910
1 parent 59c48c9
commit 5801910
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/UefiPayloadPkg/UefiPayloadPkg.dsc b/UefiPayloadPkg/UefiPayloadPkg.dsc
@@ -111,6 +111,11 @@
   DEFINE SERIAL_DRIVER_ENABLE = TRUE
   DEFINE PERFORMANCE_MEASUREMENT_ENABLE  = FALSE
 
+  # For recent X86 CPU, 0x15 CPUID instruction will return Time Stamp Counter.
+  # This is recommended way to get the time, and also how BaseCpuTimerLib works.
+  # However, some CPU doesn't support this feature, so disable it by default.
+  DEFINE CPU_TIMER_LIB_ENABLE  = FALSE
+
 [BuildOptions]
   *_*_*_CC_FLAGS                 = -D DISABLE_NEW_DEPRECATED_INTERFACES
   GCC:*_UNIXGCC_*_CC_FLAGS       = -DMDEPKG_NDEBUG
@@ -217,7 +222,7 @@
   #
   # Platform
   #
-!if $(UNIVERSAL_PAYLOAD) == TRUE
+!if $(CPU_TIMER_LIB_ENABLE) == TRUE
   TimerLib|UefiCpuPkg/Library/CpuTimerLib/BaseCpuTimerLib.inf
 !else
   TimerLib|UefiPayloadPkg/Library/AcpiTimerLib/AcpiTimerLib.inf